Cash register and indicator



(No Model.) 6 Sheets-Sheet 1.

E. B. PARKHURST. CASE REGISTER AND INDICATOR.

No. 444,368. Patented Jan. 6, 1891.

(No Model.) 6 Sheets-Sheet 2,

E B. PABKHURST. CASH REGISTER AND'INDIGATOR.

No. 444,368. Patented Jan. 6, 1891.

(No Model.) 6.Sl1eets-Sl1eet 3. E. B. PARKHURST. CASH REGISTER AND INDICATOR.

No. 444,368. Patented Jan 6, 1891.

(No Model.) 6 Sheets-Sheet 4 E. B. PARKHURST. CASH REGISTER AND INDICATOR.

No. 444,368. Patented Jan.6,1891.

(No Model.) 6 Sheets-Sheet 5. E B PARKHURST CASH REGISTER AND'INDIGATOR.

N0. 444,-368.- Patented Jan. 6, 1891.

, an: w B

par m (No Model.) 6 Sheets-Sheet 6.

' E. B. PARKHURST.

CASH REGISTER AND INDICATOR.

Patented Ja.11.6,l891.

I 7 SN M mmy 2: 5.3.2.111... it. "H .52! 1.1.1.1 I I 11/ \\\l l A KM NJ) N Qk Q" n n.. m a lbN ww UNITED STATES PATENT OFFICE.

EDIVARD PARKHURST, OF WOBURN, MASSACHUSETTS, ASSIGNOR TO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO.

CASH REGISTER AND INDICATOR.

SPECIFICATION forming part of Letters Patent No. 444,368, dated January 6, 1891.

Application filed July 28,1890. Serial No. 360,216. (No model.)

To all whom it may concern: D. Theiudicators, consisting of tablets bear- Be it known that I, EDWARD B.PARKHURST, ing numbers corresponding to those on the a citizen of the United States,residing at IVolinger-buttons of the keys, are supported on burn, in the county of Middlesex and State of Vertical rods E, vertically guided in an upper 55 Massachusetts,haveinvented certain new and cross-piece F of the frame-work and in the useful Improvements in Cash Registers and horizontally-bent upper portion of the plate Indicators, of which the following is a de- D. The rods E rest on the rear ends of the scription, reference being had to the aecomkeys and are provided with collars or other panying drzuvings, forming part of this'specisuitable projections arranged to be engaged 60 IO iication. by a supporting bar or wing G when a rod is Myinvention has for its object theimprovelifted to hold its tablet exposed to view, the ment of the construction of this class of mawing being pushed back by suitable mechanchines, and its novelty will be herein set forth, ism (not shown) whenever any key is operand specifically pointed out in the claims. ated to release any rod that may be in elevated 65 In the accompanying drawings, Figure 1 is position and to permit the projection on the a front View of the machine looking in the dirising rod to pass it, and then moving forward rection of the arrow in Fig. 3. Fig. 2 is atop again to engage, the projection on the lifted plan view of the machine with the .registerrod, all in the usual well-known manner. ing-wheels and some of the other parts re- Coiled springs surrounding the rods between 70 2o moved. Fig. 3 is a sectional side elevation their collars and the upper guide-piece aid on the line a; of Fig. 1. Fig. 3 is a detail in resetting the rods. A gong H is sounded of the transfer mechanism. Fig. at is a side by a hammer I at the operation of each key. elevation of the machine with a portion of the The first feature of myinvention relates to frame-work broken away. Fig. 5 is a detail the registering mechanism of the machine. 5 of the key-arresting rack and pawl. Fig. 6 is The machine is shown as provided with six a perspective view of thckey-board or vibratregistering-wheels A, A A", A, A, and r ing frame. Fig. '7 is a detail of a portion of Figs. 1 and 9, each wheel bearing on its pcthe registering mechanism and transfer deripheryascries ot' nunibersfromOto9,invices. Fig. 8 is a dotailof the resetting device elusive, in multiples of one. The first wheel 80 for returning the registering-wheels to zero. on the right A represents. cents in units, the Fig. 9 is a front elevation, partly in section, next cents in tons, the next dollars in units, of the registering-wheels and their associated the next dollars in tens, the next dollars in mechanism. Fig. 10 is alongitudinal section hundreds, and the last one on the left dollars of the shaft su i portingtheregistering-wheels in thousands. The wheels add one onto the 85 and the parts mounted thereon. Fig. 11 is a other from right to left by means of transfer detail of the device for resetting the wheels mechanism to be hereinafter described, so to zero. Fig. 12 is a detail of the same and that the total registered on all of them may other associated parts. Fig. 13 is another be read off ataglance.

view of some of the parts shown in Fig. 12. The keys are arranged in four groups cor- 90 Fig. l-lc is a detail view to be referred to hereresponding to the first four registeringwheels. inafter. The keys of the first group on the right, Fig. The same letters of reference are used to I, represent units of cents from one to nine, indicate identical parts in all the figures. inclusive, and actuate the wheel A through The frame-work which supports the mech mechanism hereinafter described. Those of 5 anism of the machine is composed of two the next group represent tens of cents from side plates A A and suitable cross-pieces unitten to ninety, inclusive, and actuate the wheel ing them. The operating-keys B are pivoted A Those of the next group represent dolon a horizontal shaft C at the front of the larsinmultiplesof one froinoneto nine,inclumachine. heir front endsare provided with sive, and actuate the wheel A and those of I00 numbered iinger-buttons,while their rear ends the last group tens of dollars and actuate the are guided in vertical slots in a guide-plate wheel A".

Each of the four registering-wheels A, A A and A is secured to a sleeve B, B B and B, loose on a horizontal shaft J, extending across the machine and journaled in brackets 0 C 850., and at its endsin the side plates A of the frame-work. Secured to each of the sleeves B, B B and B so as to turn with its adjacent registering-wheels, is apinion D, D D and D These pinions mesh with gears E, E E and E loosely mounted on a shaft K, parallel with the shaft J. Secured to the side of each of the gears are two ratchets F G, F G F G and F G, respectively. The two ratchets of each pair have oppositely-facing teeth, those of the inner one facing rearwardly on its upper side and those of the outer one forwardly. The outer one is the actuating-ratchet for the pinion, while the inner one is simply a locking-ratchet, as will be hereinafter explained.

Loosely mounted beside each of the outer ratchets is a segment-rack II, H H and H Each of these racks carries a spring-pressed pawl, Fig. 3, which engages the teeth of the adjacent ratchet and turns the ratchet and pinion with it when the segment is moved in a forward direction,but permits the segment to move backward without turning the ratchet and pinion, While a spring-pressed pawl L, Figs. 3 and 4, one for each of the outer ratchet-s, holds the ratchet and pinion at the point to which'they have been moved and prevents their turning in a reverse direction.

Extending diagonally across each group of keys is a graduated bar I, 1 I and I, hung by side arms on a horizontal shaft M, Figs. 1, 2, 3, and 4. These bars have pendent projections at, one over each key and of varying lengths, those at the rear end of the barbeing the longest and those at its front end the shortest. The projections a, for the reason hereinafter explained, do not rest directly on the keys, but are held slightly above them in normal position, the front ends of the bars at such times resting on the hubs of the keys at b.

Each of the bars 1, &c., has secured to it near its front end an upwardly-extending curved rack J, J J and J whose teeth mesh with the segmentracks H H ac, so that whenever the bar is lifted the segment is lifted by the rack, and by the engagement of its pawl with the ratchet secured to the adjacent gear turns the latter and with it its meshing-pinion D D 850., thereby turning forward the corresponding registering-wheel A A 8.70. Owing to the fact that the pr0- jections a on the bars I, &c., engage the keys of their respective groups at diflferent distances from the pivotal axis of the keys, each bar is lifted different distances by the operation of different keys of its group, and the adjustment of the parts is such that the operation of each key will lift its bar and rack a'distance proportionate to the value of the key, so that the corresponding registeringwheel will be turned the proper part of a revolution to register the correct amount. Thus in the first group of keys the one-cent key will lift the bar I only far enough to cause the wheel A to be turned one number, while the two-cent key will turn it two numbers, the three-cent key three numbers, and so on. It will be noticed that the bars I I &c., are pivotally supported upon an axis (the shaft M) which is arranged in rear of and parallel with the pivotal axis (the shaft 0) of the keys, and that the side arms of said bars extend forward and support the bars between the shafts M and O.

I am aware that graduated registering-bars of various constructions have heretofore been combined with a series of operating-keys for the same general purpose as mine; but those with which I am familiar were either pivotally supported at one end upon an'axis at substantially a right angle to the axis of the keys or else were supported by rearwardlyextending side arms upon the sarne axis as the keys.

My method of supporting the graduated bars upon an axis in rear of and parallel with the axis of the keys and arranging the bars between such axes is an advantageous and, so far as I am aware, a novel one.

Secured to the sleeve of each of the registering-wheels is a blunt-toothed brake-pinion 0, (see Fig. 3,) engaged by a spring d, which acts as a brake for the registering-wheel and yieldingly holds it at any point to which it is moved.

Immediately in rear of each of the ratchets F F, 850., is pivoted a pawl e, Figs. 3 and 7. Each of these pawls is norma ly held out of engagement with its ratchet by a spring, but is arranged to be thrown into engagement with it just as an operated key of its group completes its upward stroke. It will be understood that in Fig. 3 the ratchet engaged by the pawl is not shown, it being located between the one shown and the pinion and having oppositely-facing teeth; (See Fig. 7.) The pawls e are thrown into engagement With their ratchets at the completion of the stroke of the keys by means of frames N, hung on the shaft K and arranged to be struck and slightly lifted by the keys just at the end of their upward strokes. frames for each group of keys shown in Figs.

2 and 3, and consisting of two side arms hung on the shaft K, connected near said shaft by a cross-arm and having their lower rear ends bent down over the shaft M and connected by a second cross-arm. The lower side of this rear arm in normal position is slightly below the highest point reached by the upper sides of the keys, so that when the latter are operated to their full extent they strike this arm and lift the frame slightly, whereupon an arm f, projecting rearwardly from the forward cross-arm of the frame and engaging a setscrew passed through the rear end of the pawl e, throws the upper forward end of the pawl into engagement with the ratchet. This en- IIO There is one of these gagement of the pawl with the ratchet ex- I actly at the moment the stroke of a key is completed prevents the ratchet and gear, and consequently the registering-wheel, being thrown too far by a violent operation of a key.

At a complete revolution of each of the registering-wheels the wheel of next higher denomination is turned one number by novel transfer mechanism, which may be now described. In Figs. 3, 3, 7, 12, and 13 the transfer mechanism between the wheels A and A is shown, and as that between the wheels A and A and A and A is substantially the same a description of the former will be sufficient. The wheel A has a pin 9 projecting laterallyfrom its side near its periphery. In the path of travel of this pin is the forward end of an arm 0, rigid on a shaft P, journaled in brackets Q,proj ectin g from the forward side of a plate R of the frame-work, Figs. 12 and 13. Just as the wheel A completes a revolution its pin 9 strikes the forward end of the arm 0 and lifts it, thereby rocking the shaft P. A spring S, Fig. 12, engaging the rear end of the arm 0, yieldingly holds it in each of its positions. As shown in Fig. 1, the shaft Pextends from a point in rearof the wheel A to a pointin rear of thewheelA At its left-hand end it carries a latch T, Figs. 3 and 3. This latch projects rearwardl y through the plate R, and its hooked rear end normally engages a lug U on the side of a bell-crank arm V, pivoted at 71. A coiled springt, connected to the front end of the latch-arm T, yieldingly holds it in the position shown in Fig. A spring j, bearing against the front side of the bellcrank arm V, constantly tends to press the upper end of the latter rearward. Pivoted to the upper end of the arm V is a pawl XV, which extends forward and engages a ratchet K Fig. 3, secured to the side of the wheel A between the wheel and its pinions D and 0. (See Figs. 9 and 10.) Vhenever the wheel A completes a revolution and its pin lifts the forward end of the arm 0, Fig. 12, and rocks the shaft P, as before explained, the rear end of the latch T will be thrown downward and disengaged from the lug on the arm V, whereupon the spring j will throw the latter rearward to the position shown in Fig. 8 and move the pawl XV backward over one tooth of the ratchet K Upon throwing the arm V forward again to the position shown in Fig. 3 the pawl will turn the ratchet K one tooth and the wheel A one number. This throwing forward of the arm V occurs upon the next operation of the machine through the following means: Extending across the operatingkeys B near their rear ends is a bar X, hung by side arms X on the pivotal shaft 0 of the keys, the arms extending a short distance in front of said shaft, where they are connected by a second cross-bar X the two arms and the two cross-bars constituting a vibrating frame or keyboard. (Shown in full in Fig. (3.) Every time a key is operated it lifts the rear side of this frame, which rocks on its pivotal support 0 with the keys. Extending upwardly from the rear cross-bar X of this frame is a series of arms Y, each of which, except the right-hand one, has on one of its sides a shoulder 7;. The first of these shouldered arms on the right of the bar X is adjacent to the bellerank arm V. When the bell-crank arm is in the position shown in Fig. 3, its lower rear end is above and slightly in rear of the shoulder on the arm Y, so that when a key is operated and the bar X and the arm Y are lifted the shoulder slips past the end of the arm V and does not lift it; but when the latch T has been disengaged from the lug on the arm V and the upper end of the latter has been thrown rearward to the position shown in Fig. 3, as before explained, the lower end of the arm V is brought immediately over the shoulder on the arm X. If, therefore, the bar X and its arm Y be now lifted by the operation of a key, the shoulder on the arm Y will lift the lower end of the bell-crank arm and throw its upper end forward, thereby causing the pawl \V to turn the ratchet Y and wheel A forward one notch and number. Vhen the arm V is reset in this manner, the latch T re-engages the lug U and holds the arm in the position shown in Fig. 3 until at the completion of the next revolution. of the wheel A the latch is again tilted by the pin g on said wheel striking the arm 0 and rocking the shaft P, as before explained.

From the above description it will be seen that when the wheel A completes a revolution its pin g strikes the arm 0, secured to the shaft P, rocks said shaft, and disengages the latch from the lug U, whereupon the spring j throws the upper end of the bellcrank arm V rearward, bringing its lower rear end over the shoulder on the arm Y and drawing the pawl \V back to engage a fresh tooth on the ratchet K and that upon the next operation of a key the lifting of the bar X throws forward the arm V and pawl V and turns the wheel A to register the complete revolution of the wheel A. It will also be seen that the arm V is free from the shoulder on the arm Y and not affected by the lifting of the bar X, excepting when the latch T has been tripped by a complete revolution of the wheel A preparatory to making the transfer. It will be further understood that the transfer is not effected by and immediately upon the completion of revolution of the wheel A, but that the parts are thereby and thereupon merely set for the transfer and that the actual transfer is effected by the next operation of a key. This insures an accurate registry and an accurate transfer, even if at the time the wheel A completes a revolution the wheel A is being turned by the operation of a key of the tens group. If the transfer were made by and immediately upon the completion of a revolution of the wheel A, and the wheel A should happen to be turning at the same time under the operation of one of the keys of its own group, the pawl W could not act with certainty on the ratchet K, and the transfer would be lost. I have before stated that the graduated bars 1 1 ,850., did not rest directly upon the keys, but a short distance above them. The purpose of this is to permit a limited movement of the keys before they strike said bars and begin to turn the registering-wheels. The first movement of the key lifts the bar X, so that if'the latch T has been tripped and the arm V and pawl W set for a transfer and one of the keys of the tens group be then operated the lifting of the bar X at the beginning of the movement of the key will effect the transfer before the key strikes the bar I and begins to turn the wheel A through the medium of said bar and the mechanism between it and the wheel. Inasmuch as it is often desirable to strike two keys in different groups at the same time to indicate and register the amount of a sale, this arrangement of the transfer mechanism insures accuracy in the registry.

I am aware that transfer mechanisms have been heretofore devised in which the complete revolution of the primary wheel merely set the transfer devices; but in the machines with which I am familiar the actual transfer was effected either by the closing of the mon ey-drawer of the machine or else by the return-stroke of the operated key, and not by the succeeding operation of a key by a movable bar common to all of the keys, as in my machine.

While I have described only the transfer mechanism between the wheels A and A it will be understood that similar mechanisms are interposed between the wheels A and A and the wheels A and A, so that a complete revolution of any wheel of the series sets the transfer mechanism between it and its next higher wheel to effect the transfer upon the next operation of the machine. The transferdevices between the wheels A and A and A and A need not be described in detail, as they are substantially the same as those between the other wheels, with the exception of the long shaftP, which is not needed, because the wheels are near together. It will be noticed that the bar X has an'arm Y for each of said wheels, the one at the left being cut off at the shoulder, so that the upper end of the arm itself acts as a shoulder. So far as -merely actuating the transfer devices is concerned, all the arms Y might be cut off, like the one on the left, as their portions above the shoulders 70, having the pins through them, are designed for another purpose, hereinafter explained. So far as the transfer mechanism is concerned the arms Vmaybe moved either directly by the bar X or through any suitable intermediate devices.

I have before stated that a spring S, Fig. 12, engaging the rear end of the arm 0, yieldingly holds the arm and the shaft P in either of their two positions, so that when the front end of the arm is thrown up by the pin on the wheel it remains up. For the purpose of to make a transfer.

resetting the arms 0, I provide a series of bent arms Z, loosely pivoted on a shaft Z. Their upwardly-bent forward ends extend immediately in front of the lower ends of arms Z secured. rigidly to the shaft P, one beside each of the arms 0. The rear ends of the arms Z are engaged by the pins in the upper ends of the arms Y on the bar X, so that when the latter is down itholds the arms Z in the position shown in Fig. 12. WVhen the bar X is lifted by the operation of a key, the arms Z are freed, so that the pins on the wheels can easily lift the front ends of the arms but when the key is released and the bar X is reset the pins in the upper ends of its arms Y strike the rear ends of the arms Z and throw their upper ends rearward again and reset the arms 0, as will be readily understood. It will thus be seen that the arm 0 and shaft P are reset to the position shown in Fig. 12 as soon as the operated key is released and the bar X drops back to normal position; but the latch T, which has been disengaged from the lug U, Fig. 3 by the rocking of the shaft P, cannot be reset to the position shown in Fig. 3 until the operation of another key and the throwing forward of the arm V and pawl \V, as before explained. To permit the latch T to remain in the position shown in Fig. 3 while the arm 0 and shaft P are reset by the arm Z, the latch is loosely mounted on the shaft P and allowed limited play therein by the connection shown in Fig. 14, where it will be seen that one end of the hub or sleeve of the latch-arm is cut away and a pin is passed through the shaft, so that when the shaft is rocked in one direction the latch rocks with it; but the shaft can return free of the latch and the latter be held in the position to which it is moved. To one of the arms Z,I secure a lever L, Fig. 7, by pulling which forward the bar X may be lifted.

When the registry of the machine is taken off, as at the end of a days business, there may be some of the transfer mechanisms set Such transfers would not be actually made until the succeeding operation of the machine. TheleverL is provided for the purpose of lifting the bar X by hand before taking off the registry to effect any transfers that may have been set. By pulling this lever forward several times all the transfers will be etfected, no matter in what position the wheels were left by the operation of the last key, and the correct total registration will be exhibited.

The next feature of my in ventionrelates to novel devices for resetting the registeringwheels to zero. (Illustrated in Figs. 1, 8, 9, 10, 11,and 12.) As shown in Figs. 1, 9, and 10, the registering-wheels are mounted on a single shaft J, extending from one side of the machine to the other. Secured tightly upon this shaft atanysuitablepointinthis instance between the wheels A andA isa pinion M, and upon the adjacent shaft K is loosely mounted a segment-rack M meshing with the pinion.

A lever X, secured to the segment, affordsa handle by which it maybe moved to turn the pinion M and shaft J. Upon lifting the lever to its limit of stroke the pinion and shaft are given a complete revolution in one direction, and upon then depressing it they are revolved back to their initial position. Secured upon the shaft J, one adjacent to each of the wheels or the sleeve to which it is secured, is a series of spring-pawls As shown in Fig. 8, these pawls are secured to the shaft J by means of sleeves O, tight on the shaft and having ears to which the pawls are pivoted. The adjacent end of the sleeve (assuming that the pawl shown in Fig. 8 is the one for turning the wheel A is provided with a cam projection P, over which the pawl freely rides when the shaft J is revolved backward, but with which it engages when revolved forward, and thereby turns with it the sleeve and the wheel A tight on the sleeve. There is one of these pawls N foreach of the registeringwheels, arranged to engage a projection on the wheel or its sleeve when the shaft J is revolved in one direction to turn the wheels with the shaft and to permit the shaft to revolve in the opposite direction without moving the wheels. From the above description it will be seen that when the lever N is lifted the rack 1i will revolve the pinion M and shaft J in a forward direction, causing the various pawls N to engage the projections P of their corresponding wheels and turn the wheels forward with the shaft. It will be understood that no matter at what point in its revolution a wheel is it will be picked up by its pawl N and turned forward to zero. It a wheel has nearly completed a revolution, its projection P will not be engaged by its pawl N until the pinion M and shaft J have nearly completed their forward revolution, while if the wheel has just begun a revolution it will be picked up by its pawl almost at the beginning of the forward revolution of the shaft J, in both cases the wheels being turned forward to Zero, though one has to be turned only a short distance and the other nearly a full revolution. It will be understood that the pawls .1? may be secured on the shaft .l in any suitable manner and may engage projections directly on the wheels or on some part moving with the wheels, such as the sleeves B or thepawls might be on the wheels or their sleeves and the project-ions be on the shaft. In the case of the two wheels 1 A on the left the projections engaged by the pawls are directly on the sides of the wheels, since, they have no long sleeves, as have the four other wheels, and the pawls are arranged to suit this changed location of the pr0jections; but as my invention is not limited to these details of arrangement fnrtherdescription of them is unnecessary. As before explained, the arms Z, Fig. 12, normally hold the arms 0 in the path of the pins g, so that if the arms Z were not freed by the lifting of the bar X upon the operation of a key the pin 9 in passing the end of the arm 0 would have to lift it against the entire weight of the bar X. Now when the wheels are reset to zero by the mechanism just described the pins 9 0n the wheels have to pass under their correspondingarms 0. As no key is operated at such time, I provide independent means for lifting the bar X to relieve the pins on the wheels of the strain of doing so. Pivoted on the shaft Z, Figs. ll and 12, is a lever P whose rear end extends beneath the pin in the upper end of the arm Y and whose front end is beneath and in line with the rear end of the lever N. When the front end of the latter is lifted to reset the wheels to zero, its rear end strikes and depresses the front end of the lever P and lifts its rear end, thereby lifting the bar X and freeing the levers Z, so that the pins 9 can readily pass the arms As the pins are not moved past the arms until the lever N has nearly reached its upward limit of stroke, it will be seen that the arms 0 are always free to be moved by the pins when the latter reach them. The rear end of the lever N preferably shaped to form a cam-surface to act on the lever .l. and facilitate the lifting of the bar X thereby.

The next features of my invention relate to novel means for attaching operated keys to the key-board or vibrating frame and thereby coupling together simultaneously-operated keys for locking the unoperated keys until the operated ones are reset and for compelling a complete stroke of an operated key in both directions before any other operation of either that key or the others can take place. This part of my invention is illustrated in Figs. 8, at, 5, and (3. As shown in Fig. 3, each of the keys 13 is provided near its rear end with two laterally-projeetinglugs Z L. Hung upon the rear cross-bar X of the vibrating frame is a swingingbar Q, having a series of pendent hooks in, one for each key and hang ing down beside the same immediately in front of its rear lug Z. At the right-hand end of the bar Q is an arm Q rigid with the bar and having at its lower end a laterallyprojecting pin B. This pin works in a camslot R in a plate R, secured to the right-hand side plate of the frame-work, Fig. l. The cam-slot is so shaped that when any key is operated, and the bars X and Q are thereby lifted, the pin R in moving upward in the slot will swing the lower side of the hook-bar Q rearward, bringing one of its hooks m beneath the lug l. on the operated key, and thereby locking said key to the bar X, so that its further movement must be with said bar; If two or more keys in different groups are started at the same time, the hooks in corresponding to them will move under their lugs Z, and they will all be locked to the bar X and will have to move together. If one or more of the keys be released and the finger-button of only one of them pressed down, it will carry all the others with it to indicate and register the values of all the keys that were cposition,as before explained.

started. In front of the line of lugs l on the keys is a second hook-bar S, pivoted to the framework at its lower edge at m and having a series of hooks n extending up between the keys, one beside each key and immediately infront of its lug l. Rigidly secured to or integral with the barS at its right-hand end, Fig. 4, is a plate S havinga cam-slot S in which plays a pin 8, projecting from the side of the arm X of the vibrating rame. The shape of the cam-slot is such that when the vibrating frame is lifted by the operation of a key the pin S in moving up the slot will throw the upper edge of the bar S rearward and bring the hooks a over the lugs Z on all the unoperated keys, thereby lockin g them in place. They remain locked until the operated key is released and the vibrating frame is reset, bringing the pin S to the lower end of the slot again, whereupon the hook-bar and hooks are moved forward and the keys released. From the above description it will be seen that when any key is displaced from its normal position of rest it becomes hooked to the bar X, and that if two or more keys are started together they all become hooked to the bar and thereby coupled together, and also that when any key is displaced all the others become locked and remain so until the displaced key is reset.

The means I have provided for compelling the complete stroke of an operated key in each direction consists of a rack and pawl arresting device. (Illustrated in Figs. 4,5,and 8.) One of the side arms X of the vibrating frame projects rearwardly of the rear crossbar X and has pivoted in its end a doubletoothed pawl T, arranged to engaged the teeth of a vertical rack T The hub of the pawl has a notch in it, forming a projecting point 0 at the rear side of the notch. A toothed spring 0 fits in the notch when the pawl is in the position shown in Fig. 5 and yieldingly holds it in that position. When the upper tooth of the pawl is thrown rearward into engagement with the rack, the pointed projection 0 slips under the spring-tooth to the front side of the same, and the latter then yieldingly holds the pawl in its new position. At each end of the rack is a beveled surface 1). When the vibrating frame is moved upward from the position shown in Fig. 5, the lower tooth of the pawl rides over the rack, and if the, frame be released will engage a tooth of the rack and hold the frame at the point at which it was released. When the frame has been lifted far enough for the upper tooth of the pawl to strike the bevel p at the upper end of the rack, the upper tooth will be thrown into engagement with the rack and the lower tooth disengaged from it, the spring 0 yieldingly holding the pawl in this As the vibrating frame now descends, the upper tooth of the pawl rides over the teeth of the rack, and if the frame be stopped at any point the en gagement of the pawl with the rack will prevent any upward movement of it. When the lower tooth of the pawl strikes the bevel p at the lower end of the rack,it is again thrown into engagement with the rack and the upper tooth disengaged from it ready for another upstroke. Inasmuch as the operated keys be come locked to the vibrating frame and must move with it, itwill be seen that this arresting device applied to the frame acts as an arrester for each and every key, so that when any key is displaced from normal position it cannot return thereto until given its full registering-stroke, and that after being given such stroke it cannot be moved up and down, but must be returned directly to normal position. So far as this feature of my invention is concerned the operated keys may be locked to the vibrating bar by the means I have described or by any other known or suitable means. 7

In Fig. 4 the rear end of the arm X of the vibrating frame is shown as provided with a shouldered lug q, adapted to be engaged by an opposite shoulder on a pendent arm U, pivoted to the frame-work at q. The lower end of the arm U extends down into the drawer-compartment. (Not shown.) When the drawer is pushed in, its rear end strikes the'arm U and throws it rearward, thereby disengaging it from the shouldered lug g; but when the drawer is unlocked and opened the arm swings forward again and locks the vibra-ting frame, and consequently the keys, from movement until the drawer is again closed. This prevents any operation of the machine while the money-drawer is open. A latch may be provided to constantly hold the arm out of engagement with the vibrating frame at such times as it is desired to permit the machine to be operated with the moneydrawer open, as is usual in machines of this class.

The keys B are provided near. their rear ends with upwardly-extending arms 7", Figs. 3 and 4, which pass between movable disks 8, held in a suitable guideway 15 (there being one set of disks for each group of keys) to prevent the simultaneous operation of two or more keys of the same group in the usual manner.

Having thus fully described my invention, I claim- 1. The combination of the operating-keys B, graduated bar I,rack J, segment-rack H and gear E, and a ratchet-and-pawl connection between them, pinion D, and registering-wheel A, substantially as and for t-hepurpose described.

ITO

2. The combination of the operating-keys B, pivoted on the shaft 0, the graduated bar l, pivotally supported on an axis in rear of and parallel with the shaft 0 and provided with the pendent projections a, located at different distances from the pivotal support of the keys, the registering-wheel A, and an operative connection between the bar I and wheel A, substantially as and for the purpose described.

3. In a cash register andindicator, the combination of the operating-keys B, pivoted on the shaft 0, and the graduated bar I, hung on a shaft in rear of and parallel with the shaft C and having the pendent projections (L arranged in the path of the keys at different distances from theirpivotal support, whereby the bar I is moved different degrees by different keys, for the purpose specified.

4. In a cash register and indicator, the combination of the operating-keys B, pivoted on the shaft C, and the graduated bar1,pivotally supported on an axis in rear of and parallel with the shaft C and having the pendent projections (1. arranged in the path of the keys at different distances from their pivotal support and made of different lengths, increasing from front to rear,wherebythe different keys engage the projections to at substantially the same point in their operation, but move the bar 1 differentdistances, substan tially as described.

5. In a cash register and indicator, the combination of the keys B, pivoted on the shaft 0, and the graduated bar 1', pivotally supported on an axis in rear of and parallel with the shaft 0 and having the pendent projections a of different lengths and at different distances from the pivotal support of the keys, and the lower ends of the projections being slightly above the keys when the bar I is in its normal position of rest, whereby the keys may be given a slight movement before lifting the bar, for the purpose specified.

6. In a cash register and indicator, the combination of a series of operating-keys, a primary and a secondary registering-wheel, a transfer-pawl for the secondary wheel, means operated by the primary wheel to set the pawl for the transfer, and a movable bar common to all the keys for actuating the pawl upon the next positive stroke of a key to turn the secondary wheel and effect the transfer, substantially as described.

7. In acash register and indicator, thecombination of a series of operating-keys, a pri mary and a secondary registering-wheel, a transfer-pawl, a spring tending to set the pawl for the transfer, a latch holding it against the tension of the spring, a trip for the latch operated by the primary wheel, and a movable bar common to all the keys for actuating the pawl to effect the transfer uponthe nextpositive stroke of a key after the latch has been tripped by the primary wheel, substantially as described.

8. The combination of the keys B, the primary wheel A and the secondary wheel A the former provided with a pin g and the latfor with a ratchet K the transfer-pawl W, the arm V, the latch T, for holding the arm V and pawl XV in forward position, a trip for the latch operated by the pin g on the wheel A, and the bar X, arranged to throw the arm V and pawl W forward upon the next positive stroke of a key, substantially as described.

9. The combination of the keys i3, he primary wheel A and the secondary wheel A the former provided with a pin g and the latter with a ratchet K the transfer-pawl \V, engaging the ratchet, the arm V, provided with the lug U, the spring j, acting on the arm V, the latch T, engaging the lug U, a trip for the latch operated by the pin g on the wheel A, and the bar X, into whose path of movement the rear end of the arm V is brought upon the tripping-of the latch V, for the purpose specified.

10. The combination of the keys B, wheels A and A the former provided with the pin 9 and the latter with the ratchet K the bellcrank arm V, provided with the lug U, the spring pressing the arm rearward, the transfer-pawl W, pivoted to the arm V, the shaft P, the arm 0, rigidly mounted thereon in the path of the pin 9, the latch T, carried by the shaft at its opposite end and engaging the lug on the arm V, and the bar X, having the upwardly-extending arm Y, whose shoulder 7t clears the lower end of the arm V when. the bar is lifted by the operation of a key, except when the latch T has been tripped and the upper end of the arm V thrown rearward by the spring j, substantially as and for the purpose described.

11. The combination of a series of registering-wheels mounted on a revoluble shaft, a series of pawls interposed between the shaft and the wheels and arranged to turn the wheels with the shaft when the latter is revolved in one direction but not in the other, a pinion tight on the shaft, a rack meshing with the pinion, and a handle for moving the rack to revolve the pinion and shaft, substantially as and for the purpose described.

12. The combination of the registeringwheels A A &c., mounted on the revoluble shaft J, the pawls N carried by the shaft and arranged to engage projections rigid with the wheels when the shaft is revolved in one direction, the pinion M, tight on the shaft, the segment-rack M meshing with the pin ion, and the lever N for moving the rack, substantially as and for the purpose described.

13. The combination of the wheels A A &c., provided with the pins g, the arms 0 and Z levers Z, bar X, provided with arms Y, engaging the rear ends of lovers Z, and the lever P with the lever N of the resetting mechanism, whereby upon operating the lever N the bar X is lifted by the lever P to permit the pins 9 to pass under the arms 0, substantially as described.

14. The combination of the keys 1%,provided with the lugs Z, the hook-bar S, the camplate r7 secured thereto, and the vibrating frame provided with a pin S moving in the slot in the cam-plate, substantially as and for the purpose described.

IOU

15. The combination of the keys B, provided with the lugs l, the vibrating bar X, the hook-bar Q, hung thereon, the cam-plate R and the pin R, secured to the bar 0 and workingin the slotin said plate, substantially as and for the purpose described.

16. The combination of the keys B, the vibrating bar X, to which the keys become attached when displaced from normal position, the double-toothed pawl T, carried by the vibrating bar, and the rack T having a beveled face 19 at each end, substantially as and for the purpose described.

17. The combination of the keys B, the vibrating bar X, and the locking-arm U, ex- -15 lease the keys when swung rearward.

EDNARD B. PARKHURST.

Witnesses:

WM. A. MACLEOD, ROBERT WALLACE. 

